Phased array antenna device and program

A phased array antenna device for receiving a signal from a satellite, the phased array antenna device comprising:

• a plurality of subarrays, each of the plurality of subarrays including a plurality of antenna elements and a plurality of phase shifters, each of the plurality of phase shifters being connected to a corresponding antenna element included in the plurality of antenna elements and being configured to shift phase of signal received by the corresponding antenna element with set phase shift value;
• a demodulator to demodulate the signals from the satellite with the phases shifted by the plurality of phase shifters and to output the demodulated signals;
• and
• a controller to set the phase shift values of the plurality of phase shifters and to control a beam direction, wherein
• the controller, for each of the plurality of subarrays, (i) calculates a direction-correction phase shift value that maximizes a power value of the signal from the satellite by being added to the phase shift values of the plurality of phase shifters, and (ii) adds the direction-correction phase shift value to the phase shift values of the plurality of phase shifters.